<%
	/* 类构造 */
	var Class= 
	{
		create: function() 
		{
			return function() 
			{
				this.initialize.apply(this,arguments);
			}
		}
	};
	/* 类继承 */
	Object.extend=function(destination,source) 
	{
		for(var property in source)
		{
			destination[property]=source[property];
		}
		return destination;
	};	
	/* 抽象类 */
	var Abstract = new Object();
%>